Method, apparatus, and system for detecting hot socket deterioration in an electrical meter connection

• US 7,513,683 B2
• Filed: 04/06/2007
• Issued: 04/07/2009
• Est. Priority Date: 10/10/2006
• Status: Active Grant

• Current Assignee: Sensus Spectrum, LLC (Xylem, Inc.)
• Original Assignee: M&FC Holding, LLC
• Inventors: Sanderford, H. Britton, Rummel, Arlin, Reed, Marc L.
• Primary Examiner(s): Allen; Andre J
• Application Number:
  US11/697,590
• Publication Number:
  US 20080084216A1
• Time in Patent Office: 732 Days
• Field of Search: 374/102, 374/107
• US Class Current: 374/102
• CPC Class Codes: G01R 22/063 related to remote communication
• CPC Class Codes: G01R 31/66 Testing of connections, e.g. of plugs or non-disconnectable joints testing for incorrect line connections G01R31/55

Abstract

A system for detecting, at a remote location, a deterioration in an electrical connection, such as an electrical meter socket connection, includes at least one deterioration sensing device that includes an apparatus for detecting, at a remote location, a deterioration in an electrical connection; at least one fixed or portable receiving communication device, each configured to receive temperature information from the at least one deterioration sensing device and to transmit the temperature information via a communication network; and a back end connected to the communication network and configured to receive temperature information from the at least one fixed or portable sensing communication device. Upon exceeding a predetermined condition, the back-end may forward an alarm warning to a utility.

Claims

1. A method of detecting, at a remote location, a deterioration in an electrical connection, comprising steps of:

sensing a change in a temperature of a mass in thermal contact with the electrical connection;

detecting a predetermined condition; and

transmitting information regarding the change in the temperature to the remote location after detecting the predetermined condition.

2. The method of claim 1, wherein the detecting the predetermined condition includes detecting if the sensed change in the temperature of the mass meets the predetermined condition.

3. The method of claim 1, wherein the detecting the predetermined condition includes detecting if the sensed change in the temperature of the mass indicates the temperature of the mass exceeds a predetermined temperature.

4. The method of claim 1, wherein the detecting the predetermined condition includes detecting if the sensed change in the temperature of the mass indicates a rate of temperature change of the mass exceeds a predetermined rate of temperature change.

5. The method of claim 1, further comprising:

determining an average temperature based on the sensed change in the temperature of the mass,

wherein the detecting the predetermined condition includes detecting if the sensed change in the temperature of the mass indicates the temperature of the mass exceeds the determined average temperature.

6. The method of claim 1, wherein the detecting the predetermined condition includes detecting a turn-on or turn-off of sensed power.

7. The method of claim 1, wherein the detecting the predetermined condition includes receiving a message regarding the sensed change in the temperature.

8. The method of claim 1, wherein the detecting the predetermined condition includes detecting an elapsed time.

9. The method of claim 1, further comprising the steps of:

receiving control information regarding a different condition;

detecting the different condition; and

transmitting the information regarding the change in the temperature to the remote location after detecting the different condition.

10. The method of claim 1, further comprising a step of:

transmitting information regarding a material in the mass.

11. An apparatus for detecting, at a remote location, a deterioration in an electrical connection, said apparatus comprising:

an enclosure having the electrical connection;

a temperature sensor attached to a mass in thermal communication with the electrical connection and configured to produce temperature information about a temperature of the mass; and

a controller configured to receive the temperature information from the temperature sensor and transmit reporting information based on the temperature information to the remote location.

12. The apparatus of claim 11, wherein the controller is further configured to transmit the reporting information when the temperature information indicates the temperature of the mass meets a predetermined condition.

13. The apparatus of claim 11, wherein the controller is further configured to transmit the reporting information when the temperature information indicates the temperature of the mass exceeds a predetermined temperature.

14. The apparatus of claim 11, wherein the controller is further configured to transmit the reporting information when the temperature information indicates a rate of temperature change of the mass exceeds a predetermined rate of temperature change.

15. The apparatus of claim 11, wherein the controller is further configured to determine an average temperature based on the temperature information, and to transmit the reporting information when the temperature information indicates the temperature of the mass exceeds the average temperature.

16. The apparatus of claim 11, wherein the controller is further configured to detect a change in applied power and to transmit the reporting information when the change in applied power is detected.

17. The apparatus of claim 11, wherein the controller includes a receiving section configured to receive a message regarding the sensed temperature and the controller is further configured to transmit the reporting information when the message is received.

18. The apparatus of claim 11, wherein the controller includes a timer configured to detect an elapsed time and the controller is further configured to transmit the reporting information when the elapsed time is detected.

19. The apparatus of claim 11, further comprising:

a control receiving section configured to receive control information regarding a different condition, wherein the controller is further configured to detect the different condition based on the temperature information, and to transmit the reporting information when the different condition is detected.

20. A system for detecting, at a remote location, a deterioration in an electrical connection, said system comprising:

at least one deterioration sensing device that includes an apparatus for detecting, at a remote location, a deterioration in an electrical connection according to claim 11;

at least one portable sensing communication device each configured to receive temperature information from the at least one deterioration sensing device and to transmit the temperature information via a communication network; and

a back end connected to the communication network and configured to receive temperature information from the at least one portable sensing communication device.